Process for refining and cleansing coffee.



PATENTED JUNE 26, 1906.

N. J. H. WBITZMANN.

PROCESS FOR REFINING AND CLEANSING GUFFEE.

APPLICATION FILED DBO. 9, 1904 winbvses J74 [MM UNITED STATES PATENTFFICE.

NIELS JACOB HERMANN WEITZMANN, OF MALMOE, SWVEDEN.

To ctZZ whom it may concern:

Be it known that I, NrELs J AOOB HERMANN VVEITZMANN, manag ng director,of No. 12 Lundavagen, Malmoe, in the Kingdom of Sweden, have inventedcertain new and useful Improvements in Processesfor Refining andCleansing Coffee; and I do hereby declare the following to be a full,clear, and exact description of the invention,'such as will enableothers skilled in the art to which it appertains to make and use thesame.

It is generally supposed that magnetism has no chemical influence uponsubstances. I have found, however, that a magnetic field has a specialinfluence upon raw coffee-beans, neutralizing the bad taste and smelleither due to the beans themselves or due to foreign elements, so thatthe flavor and strength are increased and the actual quality of thecoffee can be readily determined.

The invention can be practically carried out in different ways,dependent upon the quality of the coffee and the quantity to be treatedat one time, due regard being paid to the kind of receptacles in whichthe coffee is packed or shipped.

Referring to the drawings, in which like parts are similarly designated,Figure 1 is a plan view of two electromagnets whose coils are connectedin series, at the poles of which the coffee inbags is placed. Fig. 2 isan elevation, partly in section, of a device for treating loose coffee.

In Fig. 1, a and b are two electromagnets whose wire coils are connectedin series with a suitable source of electric current, as a dynamo (Z.

The sacks of coffee 0 are placed between and in the vicinity of thepoles N and S of the magnets, the interpolar space being increased ordiminished to suit the strength of the electric current or the varyingconditions, the quality, and the quantity of the coffee to be treated.In this way the result will generally be obtained in from one-half hourto two Specification of Letters Patent.

Application filed December 9, 1904. Serial No. 286 231.

Patented June 26, 1906.

hours, according to the quality of the coffee treated and the strengthof the current used.

In the form of apparatus shown in Fig. 1 the parts are stationary duringtreatment.

In Fig. 2 I have shown an electromagnet N S, provided with its coil hand a vertical spindle e, the latter having two contact-rings f and g,to which the ends of the coil h are respectively connected. The spindlee is mounted in bracket i and carries a miterwheel k, meshing with anddriven by the miter-wheel Z on a driven shaft m. The brushes n and 0slide on the rings f and 9, re spectively, and are connected to thesource of current or dynamo (Z.

The electromagnet N S rotates in bracket t on the tank or receptacle j.The loose coffee is placed in said receptacle below the magnet, so thatduring the rotation of the latter the magnetic field will more equallyaffect the beans. The loose coffee may be stirred during the treatmentto bring all the beans within the strongest part of the magnetic fieldand be discharged through a central aperture 19 in the bottom of thereceptacle.

I claim 1. The process of treating coffee, which consists in subjectingthe coffee to the action of magnetism.

2. A process of treating coffee, consisting in producing a magneticfield and passing the coffee through said field.

3. A process of refining and cleansing coffee, consisting in producing apowerful magnetic field, passing the coffee through said field andagitating the coffee during its passage through said field.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses. .5 1

NIELS JACOB HERMANN WEITZMANN.

WVitnesses:

HOFMAN DAVY COLE,

ALBERT G. MIoHELsoN.

